Update Ruby, Rails and gems

Few simply steps for updating Ruby, Rails and gems on your OS. I was doing it on Mac OS X, but it should works on UNIX-based systems as well.

Ruby on Rails: rake db:create → “Couldn’t create database for …

I try to set environment for my new Ruby on Rails + MySQL project. However when I am doing rake db:create I can see: “Couldn’t create database for …”

Apt-get package management in ubuntu

Everyone (each ubuntu user) knows how to install new package, search a package or remove one. However not everyone knows how to do something else.